Ferroelectric barium strontium titanate (BST) glass-ceramics doped with different content of La2O3 were prepared via the melt-quenching technique followed by controlled crystallization. The microstructures of crystallized samples were examined by X-ray diffraction and scanning electron microscopy. Dielectric properties were also investigated. The aliovalent substitution of Ba by La induced dispersion of semiconducting BaxSr1-xTiO3 crystallites sealed in a glassy silicate matrix, which increased the epsilon(r) and loss tangent values of the BST glass-ceramic. The experimental results indicate that aliovalent substitution is an effective method to process glasseceramics with better dielectric properties.
部门归属
chinese acad sci, inst met res, shenyang res & dev ctr adv mat, shenyang 110016, peoples r china.
; chen, jc (reprint author), chinese acad sci, inst met res, shenyang res & dev ctr adv mat, shenyang 110016, peoples r china.
; jchchen@imr.ac.cn
J. C. Chen. La Doping Effect on the Dielectric Property of Barium Strontium Titanate Glass-Ceramics[J]. Journal of Materials Science & Technology,2014,30(3):295-298.
APA
J. C. Chen.(2014).La Doping Effect on the Dielectric Property of Barium Strontium Titanate Glass-Ceramics.Journal of Materials Science & Technology,30(3),295-298.
MLA
J. C. Chen."La Doping Effect on the Dielectric Property of Barium Strontium Titanate Glass-Ceramics".Journal of Materials Science & Technology 30.3(2014):295-298.
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